SDR ASAA1058005

Service difficulty report · Fmc · Boeing 737890

Difficulty date: June 24, 2010
Submitted: June 28, 2010
Operation: Air carrier
Aircraft: N559AS
Make and model: Boeing 737890
Aircraft serial: 35178
Aircraft time: 14,251 hours, 4,262 cycles
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Location: Right
Stage of operation: NR
How discovered: O
Nature of condition: J
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

RIGHT FMC FAILURE. FMC MESSAGE LIGHT CAME ON WITH SINGLE FMC OPERATION MESSAGE IN SCRATCH PAD. THIS WAS FOLLOWED BY LOSS OF FMC DATA ON F/O'S NAVIGATION DISPLAY. VTK & MAP MODE FLAGS APPEARED. MOVING FMC SOURCE SELECT SWITCH TO LEFT RESTORED NORMAL FMC OPERATION. MOVING SELECT SWITCH BACK TO NORMAL WOULD NOT RESTORE RIGHT FMC. CYCLED ACFT POWER. ACCOM FIM TASK 34 61 801. NO ACTIVE FAULT NOTED. GRN VERIFICATION ACCOM.